Document Detail

Effects of positive interactions, size symmetry of competition and abiotic stress on self-thinning in simulated plant populations.
MedLine Citation:
PMID:  20643802     Owner:  NLM     Status:  MEDLINE    
BACKGROUND AND AIMS: Competition drives self-thinning (density-dependent mortality) in crowded plant populations. Facilitative interactions have been shown to affect many processes in plant populations and communities, but their effects on self-thinning trajectories have not been investigated.
METHODS: Using an individual-based 'zone-of-influence' model, we studied the potential effects of the size symmetry of competition, abiotic stress and facilitation on self-thinning trajectories in plant monocultures. In the model, abiotic stress reduced the growth of all individuals and facilitation ameliorated the effects of stress on interacting individuals.
KEY RESULTS: Abiotic stress made the log biomass-log density relationship during self-thinning steeper, but this effect was reduced by positive interactions among individuals. Size-asymmetric competition also influenced the self-thinning slope.
CONCLUSIONS: Although competition drives self-thinning, its course can be affected by abiotic stress, facilitation and competitive symmetry.
Cheng-Jin Chu; Jacob Weiner; Fernando T Maestre; You-Shi Wang; Charles Morris; Sa Xiao; Jian-Li Yuan; Guo-Zhen Du; Gang Wang
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-07-19
Journal Detail:
Title:  Annals of botany     Volume:  106     ISSN:  1095-8290     ISO Abbreviation:  Ann. Bot.     Publication Date:  2010 Oct 
Date Detail:
Created Date:  2010-09-27     Completed Date:  2011-01-12     Revised Date:  2014-02-19    
Medline Journal Info:
Nlm Unique ID:  0372347     Medline TA:  Ann Bot     Country:  England    
Other Details:
Languages:  eng     Pagination:  647-52     Citation Subset:  IM    
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MeSH Terms
Models, Theoretical
Plant Development*
Plants / anatomy & histology*
Population Density
Grant Support
242658//European Research Council

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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